Refactor Logging - Githubissues

Fix / Handle the following logging related topics:

[x] Fix log4j warning which is printed by Elasticsearch

log4j:WARN No appenders could be found for logger (org.elasticsearch.node).
log4j:WARN Please initialize the log4j system properly.

[ ] Make OrientDB use logback for logging
[ ] Apply logrotation by default
[ ] Internal Vert.x logging needs to be reworked since Vert.x 4 plans to deprecate the logger factory API.
[ ] Logging should be reworked to support dedicated loggers in a multi tenant environment
[ ] Check whether it would be possible to add user id to the log lines
[ ] Add support for multi tenant logging

gentics / mesh-incubator